WO1987003305A1 - Corrosion-resistant copper alloy - Google Patents
Corrosion-resistant copper alloy Download PDFInfo
- Publication number
- WO1987003305A1 WO1987003305A1 PCT/JP1986/000605 JP8600605W WO8703305A1 WO 1987003305 A1 WO1987003305 A1 WO 1987003305A1 JP 8600605 W JP8600605 W JP 8600605W WO 8703305 A1 WO8703305 A1 WO 8703305A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alloy
- corrosion
- cold
- hot
- content
- Prior art date
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 23
- 238000005260 corrosion Methods 0.000 title claims abstract description 23
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 16
- 239000000956 alloy Substances 0.000 abstract description 16
- 239000013535 sea water Substances 0.000 abstract description 15
- 230000002085 persistent effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000000689 upper leg Anatomy 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
Definitions
- the present invention has excellent weather resistance, which is resistant to discoloration in the atmosphere and maintains a beautiful color tone close to forever, and has excellent corrosion resistance, especially seawater corrosion resistance, and further high strength and excellent
- the present invention relates to a corrosion-resistant Cu alloy having cold formability.
- Special bronze (hereinafter referred to as conventional Cu alloy) having a composition (more than the weight, hereinafter referred to as the weight) consisting of Cu and inevitable impurities is used (for example, JIS alloy 06 1 61 ).
- the conventional Cu alloys described above have excellent corrosion resistance, particularly seawater corrosion resistance, and have high strength.
- a hot forging or hot rolling is performed on a lump formed by a continuous forming method or the like to obtain a hot-worked material having a predetermined shape. Anneal at a temperature of 1 to 2 hours to soften, and It is practically used in a state where a crystallized phase such as crystallized Fe and a precipitated phase such as an intermetallic compound containing Fe as a main component and Fe oxide are dispersed in a large amount in a ground phase.
- the Cu alloys of less than the number have the same high strength and excellent seawater corrosion resistance as the conventional Cu alloys described above, and have even more excellent weather resistance in comparison with the Cu alloys. In addition to maintaining a beautiful golden color tone over a long period of time, it has also been discovered that it has excellent cold formability.
- the present invention has been made based on the above-mentioned findings, and the reason for limiting the component composition to the above-mentioned formulas will be described below.
- the A component has an effect of improving the strength and seawater corrosion resistance of the alloy.However, if the content is less than 5, the desired effect cannot be obtained in the above-mentioned action, while if the content exceeds 9, the content is more than 9. Since the weather resistance and the cold formability are reduced, the content is set to 5 to 9%. A preferably contains 7 to 8 ⁇ b.
- the Ni component also has the effect of improving the strength and the resistance to seawater corrosion similarly to A, but if its content is less than 0.5, the desired effect cannot be obtained in the above-mentioned effect. If it exceeds 4, the hot and cold workability will decrease.
- the Fe component has the effect of improving the strength of the alloy, but if its content is less than 0.5, it is not possible to secure the desired high strength, while if its content exceeds 4%. Large amount of crystallization phase and precipitation phase As the weather resistance and cold formability deteriorate significantly, the content is set to 0.5 to 4.
- the Mn component has a deoxidizing effect and an effect of improving strength and seawater corrosion resistance, but if its content is less than 0.1, the desired effect cannot be obtained in the above-mentioned effect.
- the content exceeds 3%, the mirror formability decreases, so the content was set to 0.1 to 3 °.
- the Ti component has an effect of further improving the weather resistance and cold formability of the alloy, but if its content is less than 0.001, the desired effect can be obtained in the above-mentioned effect, while its content is low. If it exceeds 1, the flow of molten metal during mirror fabrication will deteriorate and the surface properties of the lump will deteriorate.] Therefore, the content was determined to be 0.001-1%.
- FIG. 1 is a micrograph of a Cu alloy of the present invention by a metallographic microscope
- FIG. 2 is a micrograph of a conventional Cu alloy by a metallographic microscope.
- This molten metal is mirror-molded in a mold to make a diameter: 800 thigh ⁇ X height: 200 thigh columnar mirror lump, and this mirror lump has a range of 800-1000 ° C. After being kept at a predetermined temperature for 1 hour and then subjected to a water-cooled heat treatment (hereinafter referred to as mirror),
- hot silvering is performed at 900 ° C., width: 100 MX thickness: 15 «X length: 5 Dimensions of 0,0,0,0,000,100,000,100,000 ° C, 1 hour, water-cooled heat treatment (hereinafter referred to as hot-worked material),
- the hot-worked material obtained in the above (b) is subjected to cold rolling, and its thickness is set to 5 thicknesses, which is also within the range of 800 to: L0000 ° C.
- a water-cooled heat treatment hereinafter referred to as cold-worked material
- the Cu alloys 1 to 12 of the present invention and the comparative Gu alloys 1 to 10 each composed of the above-mentioned materials (a) to (c), the hot-worked material, and the cold-worked material were manufactured respectively.
- a melt having the component composition shown in Table 1 was prepared in the same manner, and this was mirror-molded in a mold to have a diameter of 800 ⁇ H. Thickness: 200 cm cylindrical mirror block, this mirror block is kept at 700 ° C. for 1 hour, and then annealed for cooling (the resulting product is also referred to as a mirror). After the surface is beveled, hot forging is performed while heating to 900 ° C, and the dimensions are similarly set to width: 100 thighs x thickness: 15 thighs x length: 500 raz. After holding at 700 ° C for 1 hour, the steel was annealed by standing to cool (the resulting product was referred to as hot-working material) to produce a mirror material of the conventional Gu alloy and a hot-worked material.
- the resultant Gu alloys 1 to 12 of the present invention and the comparative Gu alloys 1 to 10 obtained in the present invention were used as a solid, a hot-worked material, and a cold-worked material.
- For the purpose of evaluating strength measure the tensile strength and 0.2% resistance to corrosion, and measure the corrosion loss after immersion in artificial seawater at room temperature for 7 days to evaluate the seawater corrosion resistance.
- In order to conduct a seawater corrosion test and further evaluate the weather resistance observe the presence or absence of oxide film formation after holding at 500 ° C in the air for 2 hours, and evaluate the cold formability. A 180 ° bending test was performed on the hot-worked material and the cold-worked material, and the occurrence of cracks in the bent portion was observed.
- FIG. 1 and 2 show micrographs (magnification: 400 times) of hot-worked materials of the Cu alloy 2 of the present invention and the conventional Cu alloy by a metallographic microscope.
- Each of the comparative Gu alloys 1 to 10 has a composition in which any one of the constituent components (the component marked with * in Table 1) is out of the scope of the present invention.
- the Cu alloys 1 to 12 of the present invention all have the same or higher strength as the conventional Cu alloy and have excellent seawater corrosion resistance. It is clear that cold forming that has much better weather resistance than conventional and that is not provided by the conventional Gu alloy is also possible.] Whereas a conventional Cu alloy has a substantial single-phase structure as shown in Fig. 1, a large amount of crystallized and precipitated phases are dispersed in the phase matrix as shown in Fig. 2.
- the Cu alloy of the present invention has high strength and excellent seawater corrosion resistance, and also has excellent weatherability and cold formability, so that it is used for ship propellers and seawater desalination brassots. It is used not only for the production of tube sheets for heat exchangers, various valves, automotive parts, and hydraulic parts, but also for Western dishes and utensils that require weather resistance and cold formability, as well as building hardware and components. Even when used as a decorative product, it has industrially useful characteristics such as excellent performance while maintaining a beautiful golden color tone for a remarkably long period of time.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Conductive Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870700652A KR910009498B1 (ko) | 1985-11-28 | 1986-11-27 | 내식성 Cu 합금 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60/267929 | 1985-11-28 | ||
| JP60267929A JPS62142735A (ja) | 1985-11-28 | 1985-11-28 | 耐食性Ｃｕ合金 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1987003305A1 true WO1987003305A1 (en) | 1987-06-04 |
Family
ID=17451571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1986/000605 WO1987003305A1 (en) | 1985-11-28 | 1986-11-27 | Corrosion-resistant copper alloy |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4830825A (enrdf_load_stackoverflow) |
| EP (1) | EP0263879A4 (enrdf_load_stackoverflow) |
| JP (1) | JPS62142735A (enrdf_load_stackoverflow) |
| KR (1) | KR910009498B1 (enrdf_load_stackoverflow) |
| WO (1) | WO1987003305A1 (enrdf_load_stackoverflow) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04254538A (ja) * | 1991-02-01 | 1992-09-09 | Masanobu Tachibana | 耐食性銅合金 |
| US20040115089A1 (en) * | 1999-07-02 | 2004-06-17 | Berkenhoff Gmbh. | Weld-solder filler |
| US7582253B2 (en) * | 2001-09-19 | 2009-09-01 | Amerifab, Inc. | Heat exchanger system used in steel making |
| CN101967579A (zh) * | 2010-09-14 | 2011-02-09 | 苏州有色金属研究院有限公司 | 一种含Ti多元铝青铜合金新材料 |
| CN106471144B (zh) * | 2014-06-30 | 2019-04-12 | 日立金属株式会社 | 铜合金、冷轧板材以及其的制造方法 |
| US20190024980A1 (en) * | 2017-07-18 | 2019-01-24 | Amerifab, Inc. | Duct system with integrated working platforms |
| CN112543857A (zh) * | 2019-07-12 | 2021-03-23 | 开利公司 | 带有复合管板的管壳式热交换器 |
| JP7486893B2 (ja) | 2020-05-18 | 2024-05-20 | 株式会社ディスコ | ブレード交換装置及びブレード交換装置の調整方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114116A (ja) * | 1991-06-11 | 1993-05-07 | Censtor Corp | 集積磁気リード／ライトヘツド／撓曲体／導体構造体 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE680213C (de) * | 1936-02-29 | 1939-08-24 | Pose & Marre Ingenieurbuero | Verwendung von Kupferlegierungen fuer funkenfreie Werkzeuge |
| DE703304C (de) * | 1938-02-22 | 1941-03-06 | Pose & Marre Ingenieurbuero | Verwendung von Kupferlegierungen fuer Gegenstaende, die Schmelzbaedern ausgesetzt sind |
| US3459544A (en) * | 1962-11-09 | 1969-08-05 | Seizo Watanabe | High strength alloy of the cu-al-be series |
| US3416915A (en) * | 1965-06-23 | 1968-12-17 | Mikawa Tsuneaki | Corrosion resistant copper alloys |
| US3901692A (en) * | 1969-08-29 | 1975-08-26 | Tsuneaki Mikawa | Corrosion resistant copper alloy and the method of forming the alloy |
| DE3116135C2 (de) * | 1981-04-23 | 1983-02-10 | Metallgesellschaft Ag, 6000 Frankfurt | Verwendung einer Kupferlegierung als Werkstoff für goldfarbene Münzen |
| US4594117A (en) * | 1982-01-06 | 1986-06-10 | Olin Corporation | Copper base alloy for forging from a semi-solid slurry condition |
| JPS6077949A (ja) * | 1983-10-03 | 1985-05-02 | Sanpo Shindo Kogyo Kk | 高強度耐摩耗耐食銅基合金 |
| US4612167A (en) * | 1984-03-02 | 1986-09-16 | Hitachi Metals, Ltd. | Copper-base alloys for leadframes |
| US4589938A (en) * | 1984-07-16 | 1986-05-20 | Revere Copper And Brass Incorporated | Single phase copper-nickel-aluminum-alloys |
| JPS6130643A (ja) * | 1984-07-20 | 1986-02-12 | Kobe Steel Ltd | 加工性の良好な硬質形状記憶合金 |
-
1985
- 1985-11-28 JP JP60267929A patent/JPS62142735A/ja active Granted
-
1986
- 1986-11-27 WO PCT/JP1986/000605 patent/WO1987003305A1/ja not_active Application Discontinuation
- 1986-11-27 US US07/095,157 patent/US4830825A/en not_active Expired - Fee Related
- 1986-11-27 EP EP19860906950 patent/EP0263879A4/en not_active Withdrawn
- 1986-11-27 KR KR1019870700652A patent/KR910009498B1/ko not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114116A (ja) * | 1991-06-11 | 1993-05-07 | Censtor Corp | 集積磁気リード／ライトヘツド／撓曲体／導体構造体 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0263879A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0263879A4 (en) | 1989-04-27 |
| EP0263879A1 (en) | 1988-04-20 |
| US4830825A (en) | 1989-05-16 |
| JPS62142735A (ja) | 1987-06-26 |
| KR910009498B1 (ko) | 1991-11-19 |
| JPS6326186B2 (enrdf_load_stackoverflow) | 1988-05-28 |
| KR880700866A (ko) | 1988-04-13 |
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